US11807567B2 - Production of glass from a mixture comprising calcium oxide, and glass furnace - Google Patents

Production of glass from a mixture comprising calcium oxide, and glass furnace Download PDF

Info

Publication number
US11807567B2
US11807567B2 US16/625,953 US201816625953A US11807567B2 US 11807567 B2 US11807567 B2 US 11807567B2 US 201816625953 A US201816625953 A US 201816625953A US 11807567 B2 US11807567 B2 US 11807567B2
Authority
US
United States
Prior art keywords
glass
sodium carbonate
mixture
particle size
calcium oxide
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US16/625,953
Other languages
English (en)
Other versions
US20200156980A1 (en
Inventor
Herve Charles
Jean-Marie Bonningues
Sebastien Donze
Francois Famchon
Xavier Ibled
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arc France SAS
Original Assignee
Arc France SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arc France SAS filed Critical Arc France SAS
Publication of US20200156980A1 publication Critical patent/US20200156980A1/en
Assigned to ARC FRANCE reassignment ARC FRANCE ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BONNINGUES, JEAN-MARIE, DONZE, SEBASTIEN, FAMCHON, FRANCOIS, CHARLES, HERVE, IBLED, Xavier
Application granted granted Critical
Publication of US11807567B2 publication Critical patent/US11807567B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B1/00—Preparing the batches
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
    • C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
    • C03B5/235—Heating the glass
    • C03B5/2353—Heating the glass by combustion with pure oxygen or oxygen-enriched air, e.g. using oxy-fuel burners or oxygen lances
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B3/00—Charging the melting furnaces
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
    • C03C1/02—Pretreated ingredients
    • C03C1/026—Pelletisation or prereacting of powdered raw materials

Definitions

  • the invention relates to the field of the glassmaking industry. Melting of the materials which constitute glass requires the input of a large amount of energy.
  • the temperature of the glass bath is of the order of 1300 to 1500° C.
  • the glass is intended for direct household use, for example drinking glasses, glazing, or indirectly, for example vitroceramic hobs, or industrial use.
  • the furnace is subjected to very high thermal and mechanical stresses.
  • the furnace is constructed with high-quality refractory coatings.
  • the refractory coatings are expensive and sensitive to certain constituents of glass that are liable to undergo chemical reaction. Since the refractory coatings are poor heat conductors, the heating of the glass bath is performed from the top.
  • a liquid or gas fuel flame burner is placed between the glass bath and the top of the furnace known as the crown.
  • the glass bath is heated essentially by radiation.
  • the gas outlet temperature is from 1300 to 1600° C. depending on the glass family.
  • the manufacture of glass releases large amounts of gas.
  • the glass bath is degassed for several hours to avoid the formation of bubbles in the glass.
  • refining additives such as sulfates may be used.
  • the furnace functions in glass batches of chosen composition.
  • the outlet gases derived from the degassing and from the combustion, are evacuated via a chimney.
  • the Applicant pursued the objective of a major reduction in energy consumption relative to the mass of glass produced.
  • the main starting materials are limestone, soda, for example in the form of sodium carbonate Na 2 CO 3 and silica in the form of quartz sand.
  • the limestone and the sodium carbonate release CO 2 during the refining of the glass.
  • JPS55100236 describes the use of slag for the purpose of manufacturing glass. However, many technical obstacles are not addressed. The Applicant has no knowledge of an industrial implementation of such technology.
  • U.S. Pat. No. 2,084,328 describes a glassmaking furnace charge produced from dolomite and kaolin mixed under wet conditions.
  • the dolomite and kaolin slurry is calcined and then mixed with soda ash, sand and quicklime.
  • US 2005/0022557 describes an Na 2 CO 3 and SiO 2 premix in parallel with a CaCO 3 and SiO 2 premix with prereaction, followed by mixing of the two premixes and of additional SiO 2 , followed by introduction into a glassmaking furnace.
  • US 2012/0216574 relates to a process for making glass comprising the calcination of CaCO 3 to form CaO, the formation of a liquid-phase Na 2 SiO 3 glass, and the liquid-phase mixing of the CaO and Na 2 SiO 3 to form a soda-lime glass.
  • the Applicant has developed a process for preparing a precursor mixture providing a mixture with low heating and with low generation of batch dust.
  • the particle size of the constituents introduced into the mixture is substantially conserved, apart from the fact that the mechanical transfer handling operations may give rise to a milling effect which slightly reduces the particle size.
  • Said mixture introduced into a glassmaking furnace allows a reduction in the energy required to produce the glass and in the amount of CO 2 released of the order of 3 to 6%.
  • the melting time of the mixture is less than that observed when calcium carbonate is used. This results in an increase in the productivity of the furnace, also reflected in an additional reduction in the energy consumption of the order of 4 to 6%.
  • the invention proposes a process for manufacturing glass comprising the preparation of a glass precursor mixture for a glassmaking furnace, in which water, sand and sodium carbonate are mixed in mass proportions of between 0 and 5%, 40% and 65%, and more than 0 and not more than 25%, respectively, and, after a time of at least 10 minutes and of less than one hour, calcium oxide is added in a mass proportion of between 1% and 20% of the total.
  • the invention proposes a process for manufacturing glass comprising the preparation of a glass precursor mixture for a glassmaking furnace, in which water, sand and sodium carbonate are mixed in mass proportions of between 0 and 5%, 40% and 65%, and more than 0 and not more than 25%, respectively, and, after a time of at least one hour, calcium oxide is added in a mass proportion of between 1% and 20% of the total.
  • the preparation of the precursor mixture does not undergo any significant spontaneous heating or, at the very least, any heating liable to be a drawback.
  • the delay in introducing calcium oxide leaves the sodium carbonate the time to take up the available water, notably that in the sand.
  • the Applicant realized the advantage there would be in dispensing with the chemical reaction involving lime before the furnace treatment.
  • the mass proportion of water is between 1.5% and 3%. The risk of generating batch dusts, even with mixture fractions of small particle size, is reduced.
  • said delay is at least one hour.
  • said delay is between at least 10 minutes and less than one hour for a mixture of water, sand and sodium carbonate containing not more than 4.1% moisture.
  • the sodium carbonate has a particle size with less than 5% passing through a 0.075 mm screen, less than 15% passing through a 0.150 mm screen and less than 5% not passing through a 0.600 mm screen.
  • said mixture of water, sand and sodium carbonate has not more than 3% moisture with sodium carbonate having a particle size predominantly greater than 0.500 mm and less than 1.000 mm.
  • said mixture of water, sand and sodium carbonate has not more than 2% moisture with sodium carbonate predominantly having a particle size of less than 0.250 mm.
  • said delay is less than 72 hours.
  • the initial temperature of the starting materials is at least 30° C.
  • the rate of hydration of the sodium carbonate is increased.
  • the calcium oxide has a particle size such that 70% to 90% by mass does not pass through a 0.1 mm screen, preferably 30% to 80% by mass does not pass through a 0.5 mm screen, more preferably 30% to 70% by mass does not pass through a 2 mm screen.
  • the generation of batch dust is low.
  • the calcium oxide has a particle size such that more than 90% by mass does not pass through a 0.1 mm screen and less than 5% by mass does not pass through a 4 mm screen, preferably more than 95% by mass does not pass through a 0.1 mm screen and less than 1% by mass does not pass through a 4 mm screen.
  • the amount of air introduced into the furnace with the mixture is low and unmelted matter is rare.
  • the calcium oxide has a mean particle size of between 1 and 1.5 mm.
  • the precursor mixture is used in a glassmaking furnace less than 1 hour after its preparation for a particle size of 90% or more by mass passing through a 0.1 mm screen, preferably less than 2 hours after its preparation for a particle size of 70% to 90% by mass passing through a 0.1 mm screen.
  • a fine particle size is associated with high reactivity and rapid implementation. The melting is then rapid.
  • the precursor mixture is used in a glassmaking furnace less than 8 hours after its preparation for a particle size of 70% or more by mass passing through a 2 mm screen.
  • a mean particle size allows flexible implementation with industrially advantageous storage times.
  • said sand is dry.
  • the amount of water introduced is well controlled. In the variant without introduction of water, preferably associated with a medium or high particle size, the energy consumed is reduced.
  • the sand is considered to be dry at a moisture content of less than 0.1%.
  • the sand may be dried by heating from 15 to 20° C. above the ambient temperature.
  • water is present in said sand, preferably 3% to 4% by mass. The cost of deliberate introduction of water is avoided.
  • the calcium oxide is free of deliberate addition of aluminum oxide.
  • Aluminum oxide may be introduced during the mixing of the water, sand and sodium carbonate.
  • cullet is added to the glass precursor mixture, before or after the addition of calcium oxide, in a mass proportion of between 5% and 40% of the total.
  • the cullet may originate from declassified glass batches. The batches are of known composition so that the amounts of the other raw materials is adjusted to the desired glass quality.
  • the glass precursor mixture is prepared in the solid state. Evaporation of the water is avoided in the case of a slurry. The energy consumption of preliminary melting of the starting materials is avoided.
  • the glass precursor mixture is prepared at a temperature between the ambient temperature and the ambient temperature increased by 20° C.
  • the glass precursor mixture is prepared at a temperature of between +0 and +20° C. of the preliminary temperature of the water, sand, sodium carbonate and calcium oxide.
  • a weighted mean may be taken as the preliminary temperature.
  • the glass precursor mixture is prepared without introduction of heat energy. Drying-out of the mixture, which generates fines and thus batch dusts, is avoided.
  • said mixture is fired in an electric furnace.
  • a mixture of water, sand, soda and calcium oxide is introduced into a glassmaking furnace, the calcium oxide being in a mass proportion of between 1% and 20% of the total of the mixture, and the mixture is melted by means of at least one flame burner directed toward the mixture.
  • Said burner offers a good yield and a glazing effect of the batch dusts toward the surface of the glass bath which is undergoing or which has undergone melting.
  • the oxidant introduced into the burner is oxygen.
  • the glazing effect of the batch dusts is increased.
  • the water, sand, sodium carbonate and calcium oxide are present in mass proportions of between 0 and 5%, 40% and 65%, 1% and 25%, and 1% and 20%, respectively.
  • the decarbonatation of the Na 2 CO 3 is performed in the glassmaking furnace in the liquid phase.
  • the invention proposes an industrial glassmaking furnace comprising a molten glass tank, a combustion heating chamber located above the tank and delimited by breast walls, gables and a crown, a fume evacuation pipe in communication with the heating chamber, a loop burner placed in a direction parallel to the fume evacuation pipe, and a flame burner directed toward the molten glass tank.
  • the flame burner is placed in a crown of the furnace.
  • the glassmaking furnace is stationary. The fragility of rotating furnaces is avoided.
  • Raw materials were weighed out for 20 kg of precursor mixture.
  • the sand was dried and then rehumidified for a reproducible water content.
  • the other raw materials are added simultaneously at time t0.
  • Mixing is performed for 100 seconds in a concrete-type mixer. 16 kg are withdrawn and placed in a closed container. The temperature is recorded over 2 hours with a thermocouple placed at the center of the batch in the closed container. The water is the same for the 5 batches.
  • the sand and the sodium carbonate come from the same industrial batches from the same suppliers. Five sources of calcium are compared:
  • the notation D 50 means that 50% of the material by mass has a smaller particle size and 50% has a larger particle size.
  • the caliber is a commercial notation indicating predominance of the particle size located in the range 4 to 8 mm.
  • the low heating with quicklime C may be explained by the very large particle size and by a preliminary moisture uptake which partly hydrated the quicklime and caused a loss in possible energy gain.
  • a slaked lime introduced into a glassmaking furnace is dehydrated under the effect of heat, which has an impact on the energy balance by the energy required for the dehydration and the energy heating the additional water to the furnace temperature.
  • a lime with a large particle size is less subject to involuntary hydration and the hydration is slower than with a lime of small particle size.
  • the three batches of tests which underwent substantial heating provide a mixture which generates a lot of batch dusts, i.e. of dusts that are partly lost by the suction of the chimneys and are not incorporated into the glass obtained. Moreover, the substantial heating makes the mixture difficult to handle for several hours. This substantial heating could be exploited to fire a hot mixture and improve the thermal balance of the glassmaking furnace. The gain would be of the order of 1% to 1.5%.
  • the quicklime was introduced into the mixture late.
  • Mixing with water, sand and sodium carbonate has been made.
  • the sand and the sodium carbonate come from the same industrial batches as in the first test.
  • the lime is of 0/5 mm caliber.
  • the lime was added 5 hours later and the rest of the test was performed as previously. No heating was recorded: see the lower curve in FIG. 3 .
  • a delay time in the preparation of the mixture with a delay in introduction of the lime is advantageous for avoiding the heating.
  • the batch of mixture without heating was then loaded into a glassmaking furnace.
  • the proportion of batch dusts was comparable to that of a glass produced from limestone.
  • the Applicant sought to compare different particle sizes of quicklime in the same furnace.
  • the other raw materials are identical from one test to another.
  • a quicklime of 0/5 mm caliber gave a glass production of 23 tons/day and a quicklime of 2/6 mm caliber from the same supplier gave a glass production of 20.5 tons/day.
  • Said quicklimes originate from samples 4 and 6 of the table in chapter 4, respectively.
  • a fine quicklime melts more quickly in the furnace than a coarse quicklime, but contains more air. The air must be evacuated from the melting glass by means of longer degassing.
  • the Applicant prefers a quicklime containing a maximum amount of particles with a particle size of greater than 0.1 mm to avoid batch dusts, below a maximum value of between 4 and 6 mm for rapid melting, and relatively spread out between these limits to reduce the amount of air which is fired and which needs to be degassed from the glass.
  • the quicklime C has a particle size of more than 50% not passing through the 3.15 mm screen; 18% not passing through the 2 mm screen after passing through the 3.15 mm screen; 18% not passing through the 2 mm screen after passing through the 3.15 mm screen; less than 5% not passing through the 1.6 mm screen after passing through the 2 mm screen; less than 5% not passing through the 0.8 mm screen after passing through the 1.6 mm screen; less than 5% not passing through the 0.5 mm screen after passing through the 0.8 mm screen; less than 5% not passing through the 0.315 mm screen after passing through the 0.5 mm screen; less than 5% not passing through the 0.2 mm screen after passing through the 0.315 mm screen; less than 5% not passing through the 0.1 mm screen after passing through the 0.2 mm screen; less than 10% not passing through the 0.08 mm screen after passing through the 0.1 mm screen; less than 5% passing through the 0.08 mm screen.
  • the last two glass batches gave glass of suitable quality after 2 hours of
  • the desired particle size comprises the largest possible number of particles between 0.1 mm and 4 mm, for example 90% by mass not passing through the 0.1 mm screen and less than 5% by mass not passing through the 4 mm screen.
  • a preferred particle size is: more than 95% by mass not passing through the 0.1 mm screen and less than 1% by mass not passing through the 4 mm screen.
  • the flue of an industrial glassmaking furnace was equipped with a shunt for recovering and weighing a portion of the batch dusts.
  • the same shunt device was used during the test run.
  • the tests were conducted with, at the start, the same raw materials except for changing the limestone to CaO and obtaining a glass of the same composition at the outlet and over a time of 24 hours.
  • a first series of tests was conducted with a conventional mixture comprising limestone and a loop furnace with a crown burner.
  • a second series of tests was conducted with a mixture comprising quicklime No. 4 and the loop furnace with a crown burner.
  • the composition of the mixture is 1367 kg of sand, 112 kg of dolomite, 416 kg of sodium carbonate, 4 kg of sodium sulfate, 160 kg of quicklime, 30 kg of alumina.
  • the amounts of batch dusts recovered constitute relative measurements for mutual comparison. They were not expressed relative to the tonne of glass produced. These are raw values in grams:
  • the Applicant developed the preparation of a precursor mixture of glass for a glassmaking furnace, in which, firstly, water, sand and sodium carbonate are mixed in mass proportions of between 0 and 5%, 40% and 65%, and more than 0 and not more than 25%, respectively, and, secondly, calcium oxide is added in a mass proportion of between 1% and 20% of the total.
  • the addition of CaO is performed at least one hour after the first mixing.
  • the materials are at the ambient temperature.
  • the water is absorbed by the sodium carbonate and becomes sparingly available for the CaO.
  • Water permits reduced sensitivity to the batch dusts by means of the effect of cohesion on the fine particles.
  • the precursor mixture contains for a soda-lime glass: water 0 to 3%, sand 65% to 75%, sodium carbonate 10% to 15%, quicklime 10% to 25%, magnesia 0 to 6%, refining agents, colorants and decolorizers 0 to 2%.
  • a borosilicate glass contains: 7% to 13% of boron trioxide (B 2 O 3 ), 4% to 8% of alkaline oxides (Na 2 O; K 2 O), 2% to 7% of alumina (Al 2 O 3 ), 0 to 5% of other alkaline oxides (CaO, MgO, etc.).
  • a borosilicate glass containing CaO may be manufactured from a precursor mixture according to the invention.
  • FIG. 1 is a schematic perspective view of a glassmaking furnace according to one embodiment.
  • FIG. 2 shows curves of heating as a function of time for limestone and quicklime.
  • FIG. 3 shows curves of heating as a function of time for three mixtures containing lime.
  • FIG. 4 shows several curves of heating as a function of time for ten tests as a function of the temperature of the starting materials, of the moisture content, of the delay between premixing and the introduction of the quicklime, and of the particle size of the sodium carbonate.
  • FIG. 5 shows a selection of the curves of FIG. 4 on a moisture content parameter.
  • FIG. 6 shows a selection of the curves of FIG. 4 on the temperature parameter.
  • FIG. 7 shows a selection of the curves of FIG. 4 on the particle size parameter of the sodium carbonate.
  • the glassmaking furnace 1 has at least one loop burner and at least one crown burner.
  • the loop burner is oriented substantially horizontally, close to an oxidant inlet.
  • the flame extends substantially horizontally over the bath.
  • the bath is composed at the start of heating of the starting materials to be melted, i.e. of the glass precursor mixture, and then of the molten glass undergoing production, gradually transformed into industrial glass having the desired quality.
  • the crown burner is oriented substantially vertically in a summit wall of the furnace. The flame extends substantially vertically toward the bath.
  • the glassmaking furnace 1 comprises a molten glass tank 2 for a batch production.
  • the glassmaking furnace 1 comprises a combustion chamber 3 located above the molten glass bath and an upper wall 4 composed of a crown 5 and vertical parts known as the breast walls (length) or gables (width) 6 delimiting the combustion chamber 3 .
  • the glassmaking furnace 1 comprises at least one loop burner 7 fed with fuel oil or gas.
  • the glassmaking furnace 1 comprises at least one crown burner 8 fed with fuel oil or gas.
  • the glassmaking furnace 1 comprises an oxidant inlet 9 .
  • the oxidant may be air and/or oxygen.
  • the burner 8 is installed in the crown 5 .
  • the burner 8 is a flame burner directed toward the upper surface of the bath, from the top downward.
  • the burner 8 is positioned so that its flame is located outside the zone where the movement of gas generated by the burner 7 is maximal.
  • the burner 8 is positioned substantially at the top of the crown 5 .
  • the burner 8 is positioned substantially in the middle of the furnace 1 in the direction of the length.
  • the members for withdrawing the refined glass have not been shown.
  • the tank 2 and the upper wall 4 are made of refractory materials, reinforced with an outer metallic structure remote from the high-temperature zones.
  • the burner 7 is a flame burner oriented horizontally in the combustion chamber 3 .
  • the burner 7 is installed below the oxidant inlet 9 .
  • the glassmaking furnace 1 comprises a fume outlet 10 housed in one of the vertical walls 6 above the molten glass bath.
  • the burner 7 and the fume outlet 10 may be provided on the same small side so that the flame of said burner 7 and the fumes follow a U shaped path in the combustion chamber 4 .
  • the U shaped path is referred to as a loop path in the usual jargon.
  • the burner 7 and the fume outlet 10 may be parallel.
  • the burner 7 and the fume outlet 10 emerge in the combustion chamber 3 .
  • the installation may comprise a flue.
  • the flue is a substantially horizontal fume pipe.
  • the flue is in fluid communication with the combustion chamber 3 via the fume outlet 10 .
  • the flue is made of refractory materials reinforced with an outer metallic structure which is remote from the high-temperature zones.
  • the flue is free of valves.
  • the flue conducts the fumes to a chimney or a heat recovery device or a regenerator for heating the oxidant.
  • the combined use of the loop burner 7 and of the crown burner 8 offers a high yield and glazing of the surface of the bath.
  • the glazing is rapid melting of the surface zone of the bath subjected to the action of the flame of the crown burner 8 . Rapid melting prevents the release of dusts from said zone. Glazing is obtained more quickly.
  • the water was supplied to a dry sand and mixed for 3 minutes.
  • sodium carbonate and alumina were mixed with the wet sand for 2 minutes. Measurement of the moisture content H and of the temperature T of the premix was performed.
  • the water present before the introduction of the sodium carbonate and the alumina reacts with the sodium carbonate via a hydration reaction of the sodium carbonate, with a rise in temperature of a few degrees.
  • the sodium carbonate reacts with said water at least in the tests of curves 1 to 3. Free water remains in the test of curve 4 since the subsequent addition of calcium oxide brings about a strong and vigorous temperature increase. Substantially no free water remains in the tests of curves 1 to 3 since the subsequent addition of calcium oxide does not bring about any temperature increase. Furthermore, supplying water, as a check, more than one hour after the addition of calcium oxide brings about a strong and vigorous temperature increase.
  • the sand has a composition: SiO 2 at least 99%, Al 2 O 3 less than 1%, K 2 O less than 0.1%, TiO 2 less than 0.03%, Fe 2 O 3 less than 0.015%. The other elements are in trace amount.
  • the sand has a particle size D 50 of between 0.20 and 0.25 mm.
  • the sand has a particle size with not more than 3% of screen retainings of 0.355 mm, and not more than 1% of passage through a 0.125 mm screen.
  • the sodium carbonate has a composition: Na 2 CO 3 99.75%, NaCl 0.03% and H 2 O less than 0.1%. The other elements are in trace amount.
  • the sodium carbonate has a particle size D 50 of between 0.15 and 0.25 mm.
  • the sodium carbonate has a particle size with not more than 0.5% of screen retainings of 0.600 mm, at least 90% of screen retainings of 0.150 mm and not more than 2% of passage through a 0.075 mm screen.
  • the calcium oxide has a composition: CaO at least 93%, MgO less than 2%, CO 2 less than 2%, Fe 2 O 3 less than 0.1%, S less than 0.06%. The other elements are in trace amount.
  • the calcium oxide has a particle size D 50 of between 0.08 and 0.12 mm.
  • the calcium oxide has a particle size with not more than 1.6% of screen retainings of 5.00 mm, and not more than 55% of passage through a 0.090 mm screen.
  • the maximum temperature T max reached within the hour following the addition of calcium oxide is measured.
  • the temperature measurement is performed by inserting a temperature probe into the mixture contained in the mixer, the mixer having been switched off.
  • the first temperature clip observed on all the curves in FIG. 4 corresponds to the step of withdrawing the temperature probe, addition of the calcium oxide, switching on the mixer for 2 minutes, inserting the temperature probe again.
  • the second temperature clip observed in curves 1, 2 and 3 corresponds to an additional step of adding excess water beyond the amounts indicated to check the presence of calcium oxide more than one hour after the introduction of said calcium oxide.
  • This addition of water is reflected by an exothermic reaction of hydration of the calcium oxide, transforming it into calcium hydroxide.
  • the temperature rise observed after said addition of excess water makes it possible to deduce that the calcium oxide remained present beforehand in the mixture.
  • a temperature maximum is reached, i.e. very rapidly for curve 4 in about 1 minute after the end of the mixing action, i.e. about 3 minutes after placing the sodium carbonate and the alumina in contact with the sand and the water, i.e. more slowly for the other curves in about 10 minutes after the end of the mixing action.
  • the temperature reduction after the maximum indicates that the water-sodium carbonate reaction has ceased.
  • the end of said reaction indicates that either all the available water has been taken up, or that all the available sodium carbonate has been hydrated and there is free water remaining.
  • the rapid reaction of curve 4 corresponds to the hydration of the sodium carbonate with excess water.
  • the particle size of the sodium carbonate has an influence on the duration D. To a certain extent, the finer the particle size, the more quickly the water is absorbed but there is a risk of initiating setting to a solid. In the event of setting to a solid, the water remains available for the quicklime, whence heating that it is desired to avoid.
  • Test No. 2 was performed with a cold concrete mixer, at about 0° C., which slowed down the sodium carbonate hydration reaction.
  • Test No. 2 is not entirely representative in the curve section prior to the addition of calcium oxide.
  • an energy input may be performed in the form of heating the concrete mixer and/or mixing at a higher temperature than the ambient temperature, for example with a flame burner, electric heating, or injection of steam into the mixture, while remaining at a mixing temperature below 47° C.
  • the initial temperature T rm of the starting materials has an influence on the rate of the water-sodium carbonate reaction.
  • T rm 30° C.
  • the speed of the reaction in test No. 4 corroborates a presence of excess water enabling faster hydration of the sodium carbonate.
  • the relative slowness of the reaction in test No. 7 shows a water-sodium carbonate equilibrium.
  • the stability between tests No. 1 and No. 3 shows that a duration D of about 10 minutes is sufficient and robust with raw materials at an initial temperature of 30° C. or more.
  • Such a stability between tests No. 1 and No. 3, and between tests No. 6 and No. 5 shows that, with sodium carbonate in excess relative to water, the reaction speed is sparingly dependent on the water content.
  • Tests 8 and 9 were conducted with sodium carbonate fines passing through a 0.250 mm screen whereas test 10 was conducted with coarse sodium carbonate particles not passing through a 0.500 mm screen and passing through a 1.000 mm screen.
  • the origin and batch of sodium carbonate are the same for tests 1 to 7. Screening was performed.
  • Tests 8 and 10 were chosen with a moisture content suggesting a satisfactory result, whereas test 9 was chosen with a high moisture content to test the possible influence of the particle size on the maximum moisture content.
  • the curve of test 8 is close to the curve of test 3.
  • Test 8 is interpreted as producing total consumption of the free water by the sodium carbonate in a relatively short time of less than 10 minutes and a temperature increase of less than 15° C. relative to the initial temperature T rm .
  • the fine particle size does not have any major impact at the moisture content of 3.44%.
  • Test 9 at a high moisture content reveals a much slower sodium carbonate hydration reaction than in test 4. This is explained by the setting to a solid of the precursor mixture accompanied by crusting phenomena liable to slow down the reaction.
  • Test 10 at a large particle size and 3.8% moisture content gives a curve different from the other tests in the sodium carbonate hydration step.
  • the temperature rises for more than 25 minutes, which indicates continuation of the sodium carbonate hydration reaction.
  • the slowness of the sodium carbonate hydration results in a reduced available active surface of the sodium carbonate on account of the large particle size of the sodium carbonate.
  • test 8 shows a temperature increase comparable to that of tests 3 and 7, which is thus satisfactory.
  • the presence of available water to hydrate the calcium oxide is very low.
  • Test 9 shows a temperature increase comparable to that of test 4, which is thus too high. Decreasing the particle size does not afford any advantageous effect in the step of adding calcium oxide and presents risks of setting to a solid. Such risks may be reduced by selecting a moisture content of 2% or less.
  • the moisture content will be limited to 3%.
  • the hydration of the sodium carbonate will be faster than in test 10 and the temperature after introduction of the calcium oxide will remain within a range of +0 to +15° C. relative to the ambient temperature.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Combustion & Propulsion (AREA)
  • Glass Melting And Manufacturing (AREA)
  • Glass Compositions (AREA)
US16/625,953 2017-06-30 2018-06-29 Production of glass from a mixture comprising calcium oxide, and glass furnace Active 2038-12-29 US11807567B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR1756138 2017-06-30
FR1756138A FR3068347B1 (fr) 2017-06-30 2017-06-30 Preparation de fabrication de verre et four de verrerie
PCT/FR2018/051626 WO2019002802A1 (fr) 2017-06-30 2018-06-29 Fabrication de verre à partir d'un mélange comprenant de l'oxyde de calcium et four de verrerie

Publications (2)

Publication Number Publication Date
US20200156980A1 US20200156980A1 (en) 2020-05-21
US11807567B2 true US11807567B2 (en) 2023-11-07

Family

ID=60923549

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/625,953 Active 2038-12-29 US11807567B2 (en) 2017-06-30 2018-06-29 Production of glass from a mixture comprising calcium oxide, and glass furnace

Country Status (11)

Country Link
US (1) US11807567B2 (fr)
EP (1) EP3645471B1 (fr)
JP (1) JP7062702B2 (fr)
CN (1) CN110997579B (fr)
AR (1) AR112489A1 (fr)
ES (1) ES3031560T3 (fr)
FR (1) FR3068347B1 (fr)
HU (1) HUE071504T2 (fr)
MX (1) MX2019015368A (fr)
PL (1) PL3645471T3 (fr)
WO (1) WO2019002802A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3068347B1 (fr) * 2017-06-30 2020-08-28 Arc France Preparation de fabrication de verre et four de verrerie
FR3125033B1 (fr) 2021-07-09 2024-06-21 Arc France Préparation de fabrication de verre et four de verrerie
EP4464673A1 (fr) 2023-05-17 2024-11-20 S.A. Lhoist Recherche Et Developpement Matière première à faible teneur en poussière et réactivité améliorée destinée à être utilisée dans la fabrication de verre
WO2025216936A1 (fr) * 2024-04-08 2025-10-16 Corning Incorporated Verre à module d'élasticité élevé
EP4644341A1 (fr) 2024-04-30 2025-11-05 S.A. Lhoist Recherche Et Developpement Utilisation dans un lot de verre d'une source de calcium ou de calcium-magnésium modifié à faible poussière et empreinte carbone-foot améliorée
EP4644342A1 (fr) 2024-04-30 2025-11-05 S.A. Lhoist Recherche Et Developpement Mélange de verre à faibles émissions de poussière et empreinte carbone améliorée
EP4682121A1 (fr) 2024-07-19 2026-01-21 S.A. Lhoist Recherche Et Developpement Composition de calcium et de magnésium à faible poussière et empreinte carbone améliorée destinée à être utilisée dans la fabrication de verre

Citations (64)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2084328A (en) 1935-03-04 1937-06-22 Non Metallic Minerals Inc Glass batch and process of making
US2239880A (en) * 1937-01-14 1941-04-29 Philadelphia Quartz Co Manufacture of silicates
US3314748A (en) * 1964-03-12 1967-04-18 Allied Chem Production of dense soda ash
US3441396A (en) * 1965-06-03 1969-04-29 Pittsburgh Corning Corp Process for making cellular materials
US3511629A (en) * 1966-12-01 1970-05-12 Fmc Corp Method for refining glass with a metal sulfide frit
US3542534A (en) * 1969-03-10 1970-11-24 Junnosuke Yamamoto Process for pelletizing glassmaking materials
US3545988A (en) * 1966-09-21 1970-12-08 Owens Illinois Inc Glass manufacturing method
US3589885A (en) * 1969-04-07 1971-06-29 Owens Illinois Inc Glass melting with a refining agent
US3630673A (en) * 1968-04-26 1971-12-28 Dow Chemical Co Source composition for alkali metal oxides and alkaline earth metal oxides
US3682666A (en) * 1966-03-09 1972-08-08 Saint Gobain Batch material for vitreous manufactures
US3870496A (en) * 1971-08-23 1975-03-11 Univ Utah Method of creating a foamed glass product from waste glass
US3967943A (en) * 1974-10-30 1976-07-06 Anchor Hocking Corporation Method of improving glass batch melting by use of water glass
US4028131A (en) * 1968-01-23 1977-06-07 Saint-Gobain Industries Raw materials for glass making and method of making them
US4110097A (en) * 1974-08-14 1978-08-29 Saint-Gobain Industries Method for the manufacture of glass
JPS5436312A (en) 1977-08-25 1979-03-17 Ishizuka Glass Method of removing water from silica sand used for glass raw material
JPS55100236A (en) 1979-01-18 1980-07-31 Sumitomo Metal Ind Ltd Method and apparatus for manufacturing glass starting material
US4243423A (en) * 1979-10-10 1981-01-06 Owens-Corning Fiberglas Corporation Glass manufacturing
US4349366A (en) * 1980-02-21 1982-09-14 Olin Corporation Glass batch pellet production and drying process
US4479778A (en) 1982-01-08 1984-10-30 Societe Europeenne Des Produits Refractaires Construction of regenerator furnaces
JPS6036312A (ja) 1983-08-08 1985-02-25 Nippon Cement Co Ltd α型窒化けい素の製造法
US4526603A (en) * 1983-03-28 1985-07-02 Fmc Corporation Method for manufacturing an opal borosilicate glass
US4539030A (en) * 1983-08-03 1985-09-03 Ppg Industries, Inc. Method of calcining and liquefying glass batch
SU1222636A1 (ru) 1983-08-30 1986-04-07 Научно-Производственное Объединение "Техэнергохимпром" Способ варки стекла
US4844753A (en) * 1986-07-25 1989-07-04 Nisshin Steel Co. Ltd. Method for forming insulating films on electromagnetic steel plates
EP0355618A2 (fr) 1988-08-19 1990-02-28 Ppg Industries, Inc. Méthode de fabrication de verre avec préréaction des ingrédients
WO1990012760A1 (fr) 1989-04-17 1990-11-01 Aga Ab Methode et four a fusion pour la fabrication de verre
US5395806A (en) * 1993-08-28 1995-03-07 Chemical Products Corporation Dense, granular alkaline earth metal carbonate and alkali metal salt composition for use in glass manufacture
US5431992A (en) * 1993-11-05 1995-07-11 Houpt; Ronald A. Dual-glass fibers and insulation products therefrom
JPH08208240A (ja) 1995-02-01 1996-08-13 Osaka Gas Co Ltd ガラス溶解炉
US5674616A (en) * 1995-02-06 1997-10-07 Conversion Technologies International, Inc. Glass beads having improved fracture toughness
JP2001220150A (ja) 1999-08-16 2001-08-14 Boc Group Inc:The 天井取り付け型酸素バーナーを用いるガラス熔解炉の性能を向上させる方法
US6395205B1 (en) * 1996-07-17 2002-05-28 Chemical Lime Company Method of manufacturing an aerated autoclaved concrete material
EP1236691A2 (fr) 2001-03-02 2002-09-04 The Boc Group, Inc. Procédé et appareil pour la fusion de verre utilsant de brûleurs à l'oxygène-carburant montés dans la voûte
WO2002092521A1 (fr) 2001-05-16 2002-11-21 Owens Corning Systeme d'evacuation positionne a l'extremite aval d'un four de fusion du verre
US20030052434A1 (en) * 2001-02-22 2003-03-20 Specialty Minerals (Michigan) Inc. Fluidized reaction of synthetic silicates
WO2003057636A1 (fr) 2001-12-27 2003-07-17 Specialty Minerals (Michigan) Inc. Procede de fabrication de verre et compositions associees
US6780801B1 (en) * 1998-07-07 2004-08-24 Nippon Sheet Glass Co., Ltd. Raw material composition for soda-lime glass
US20040204304A1 (en) * 2001-12-27 2004-10-14 Hockman John Albert Method of manufacturing glass and compositions therefore
US20050022557A1 (en) * 2003-02-27 2005-02-03 Carty William M. Selective glass batching methods for improving melting efficiency and reducing gross segregation of glass batch components
US20050096209A1 (en) * 2002-06-10 2005-05-05 Asahi Glass Company, Limited Glass and method for producing glass
US20070098610A1 (en) * 2005-11-02 2007-05-03 Ingram Kevin D Method of retarding quicklime for glass manufacture
US20070245854A1 (en) * 2006-04-25 2007-10-25 The Arizona Board Of Regents On Behalf Of The University Of Arizona Silicon refining process
WO2008064790A1 (fr) 2006-11-27 2008-06-05 Cognis Ip Management Gmbh Procédé et installation de production de verre soluble avec récupération de chaleur
US7507388B2 (en) * 2004-11-11 2009-03-24 Eti Soda Uretim Pazarlama Nakliyat Ve Elektrik Uretim Sanayi Ve Ticaret A.S. Process for production of dense soda, light soda, sodium bicarbonate and sodium silicate from solutions containing bicarbonate
US20090277225A1 (en) * 2005-12-23 2009-11-12 Pilkington Group Limited Production of Glass
US20100242545A1 (en) * 2009-03-30 2010-09-30 Richardson Andrew P Cyclical stoichiometric variation of oxy-fuel burners in glass furnaces
US20100255980A1 (en) * 2009-04-03 2010-10-07 Guardian Industires Corp. Low iron high transmission glass with boron oxide for improved optics, durability and refining, and corresponding method
CN101993084A (zh) 2010-11-29 2011-03-30 中煤平朔煤业有限责任公司 一种粉煤灰制备二氧化硅和氧化铝的方法
US20110132230A1 (en) * 2009-12-08 2011-06-09 Chan Han Geopolymer precursor dry mixture, package, processes and methods
US20110302962A1 (en) * 2010-06-09 2011-12-15 Artur Gattermann Method for producing clear glass or clear drawn glass by utilizing a special refining process
CN102424392A (zh) 2011-09-11 2012-04-25 中国科学院过程工程研究所 一种综合利用微硅粉制备白炭黑联产纳米碳酸钙的方法
US20120216574A1 (en) * 2011-02-24 2012-08-30 Dawid Dewet-Smith Process for Melting and Refining Soda-Lime Glass
US20130095261A1 (en) * 2006-06-20 2013-04-18 Momentive Performance Materials, Inc. Fused quartz tubing for pharmaceutical packaging
US20140024518A1 (en) * 2011-01-27 2014-01-23 Samuel Mark Leese Pellet
CN106565096A (zh) 2016-10-31 2017-04-19 昆明理工大学 一种利用电石渣制备微晶玻璃的方法
US20180354841A1 (en) * 2016-02-26 2018-12-13 AGC Inc. Glass raw material granules and method for their production
US20180362380A1 (en) * 2017-06-16 2018-12-20 Owens-Brockway Glass Container Inc. Glass batch material and process for making glass
US20190382303A1 (en) * 2018-06-18 2019-12-19 Schott Ag Borosilicate glass article with low boron content
US10597325B2 (en) * 2015-11-16 2020-03-24 Gcp Applied Technologies Inc. Postponed onset of quicklime hydration
US20200156980A1 (en) * 2017-06-30 2020-05-21 Arc France Production of glass from a mixture comprising calcium oxide, and glass furnace
US20210094859A1 (en) * 2019-10-01 2021-04-01 Owens-Brockway Glass Container Inc. Surgical instrument assembly including an end effector configurable in different positions
US20210147276A1 (en) * 2017-03-16 2021-05-20 Synthera Biomedical Private Limited Manufacture of porous glass and glass-ceramic particulate structures by gel casting
US20210340047A1 (en) * 2020-05-04 2021-11-04 Bormioli Luigi S.P.A. Method for producing a glass container
US20210380464A1 (en) * 2018-10-29 2021-12-09 Arc France Glass production method and industrial glass-making facility

Patent Citations (72)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2084328A (en) 1935-03-04 1937-06-22 Non Metallic Minerals Inc Glass batch and process of making
US2239880A (en) * 1937-01-14 1941-04-29 Philadelphia Quartz Co Manufacture of silicates
US3314748A (en) * 1964-03-12 1967-04-18 Allied Chem Production of dense soda ash
US3441396A (en) * 1965-06-03 1969-04-29 Pittsburgh Corning Corp Process for making cellular materials
US3682666A (en) * 1966-03-09 1972-08-08 Saint Gobain Batch material for vitreous manufactures
US3545988A (en) * 1966-09-21 1970-12-08 Owens Illinois Inc Glass manufacturing method
US3511629A (en) * 1966-12-01 1970-05-12 Fmc Corp Method for refining glass with a metal sulfide frit
US4028131A (en) * 1968-01-23 1977-06-07 Saint-Gobain Industries Raw materials for glass making and method of making them
US3630673A (en) * 1968-04-26 1971-12-28 Dow Chemical Co Source composition for alkali metal oxides and alkaline earth metal oxides
US3542534A (en) * 1969-03-10 1970-11-24 Junnosuke Yamamoto Process for pelletizing glassmaking materials
US3589885A (en) * 1969-04-07 1971-06-29 Owens Illinois Inc Glass melting with a refining agent
US3870496A (en) * 1971-08-23 1975-03-11 Univ Utah Method of creating a foamed glass product from waste glass
US4110097A (en) * 1974-08-14 1978-08-29 Saint-Gobain Industries Method for the manufacture of glass
US3967943A (en) * 1974-10-30 1976-07-06 Anchor Hocking Corporation Method of improving glass batch melting by use of water glass
JPS5436312A (en) 1977-08-25 1979-03-17 Ishizuka Glass Method of removing water from silica sand used for glass raw material
JPS55100236A (en) 1979-01-18 1980-07-31 Sumitomo Metal Ind Ltd Method and apparatus for manufacturing glass starting material
US4243423A (en) * 1979-10-10 1981-01-06 Owens-Corning Fiberglas Corporation Glass manufacturing
US4349366A (en) * 1980-02-21 1982-09-14 Olin Corporation Glass batch pellet production and drying process
US4479778A (en) 1982-01-08 1984-10-30 Societe Europeenne Des Produits Refractaires Construction of regenerator furnaces
US4526603A (en) * 1983-03-28 1985-07-02 Fmc Corporation Method for manufacturing an opal borosilicate glass
US4539030A (en) * 1983-08-03 1985-09-03 Ppg Industries, Inc. Method of calcining and liquefying glass batch
JPS6036312A (ja) 1983-08-08 1985-02-25 Nippon Cement Co Ltd α型窒化けい素の製造法
SU1222636A1 (ru) 1983-08-30 1986-04-07 Научно-Производственное Объединение "Техэнергохимпром" Способ варки стекла
US4844753A (en) * 1986-07-25 1989-07-04 Nisshin Steel Co. Ltd. Method for forming insulating films on electromagnetic steel plates
EP0355618A2 (fr) 1988-08-19 1990-02-28 Ppg Industries, Inc. Méthode de fabrication de verre avec préréaction des ingrédients
US4920080A (en) * 1988-08-19 1990-04-24 Ppg Industries, Inc. Method of making glass with preliminary reaction of batch materials
WO1990012760A1 (fr) 1989-04-17 1990-11-01 Aga Ab Methode et four a fusion pour la fabrication de verre
US5395806A (en) * 1993-08-28 1995-03-07 Chemical Products Corporation Dense, granular alkaline earth metal carbonate and alkali metal salt composition for use in glass manufacture
US5431992A (en) * 1993-11-05 1995-07-11 Houpt; Ronald A. Dual-glass fibers and insulation products therefrom
JPH08208240A (ja) 1995-02-01 1996-08-13 Osaka Gas Co Ltd ガラス溶解炉
US5674616A (en) * 1995-02-06 1997-10-07 Conversion Technologies International, Inc. Glass beads having improved fracture toughness
US6395205B1 (en) * 1996-07-17 2002-05-28 Chemical Lime Company Method of manufacturing an aerated autoclaved concrete material
US6780801B1 (en) * 1998-07-07 2004-08-24 Nippon Sheet Glass Co., Ltd. Raw material composition for soda-lime glass
JP2001220150A (ja) 1999-08-16 2001-08-14 Boc Group Inc:The 天井取り付け型酸素バーナーを用いるガラス熔解炉の性能を向上させる方法
US6422041B1 (en) 1999-08-16 2002-07-23 The Boc Group, Inc. Method of boosting a glass melting furnace using a roof mounted oxygen-fuel burner
US20030052434A1 (en) * 2001-02-22 2003-03-20 Specialty Minerals (Michigan) Inc. Fluidized reaction of synthetic silicates
EP1236691A2 (fr) 2001-03-02 2002-09-04 The Boc Group, Inc. Procédé et appareil pour la fusion de verre utilsant de brûleurs à l'oxygène-carburant montés dans la voûte
WO2002092521A1 (fr) 2001-05-16 2002-11-21 Owens Corning Systeme d'evacuation positionne a l'extremite aval d'un four de fusion du verre
CN1516680A (zh) 2001-05-16 2004-07-28 ŷ��˹�ƶ�����˾ 位于玻璃熔炉的下游端的排气口
WO2003057636A1 (fr) 2001-12-27 2003-07-17 Specialty Minerals (Michigan) Inc. Procede de fabrication de verre et compositions associees
US20040204304A1 (en) * 2001-12-27 2004-10-14 Hockman John Albert Method of manufacturing glass and compositions therefore
CN1558874A (zh) 2001-12-27 2004-12-29 密执安特种矿石公司 玻璃的生产方法及其所用的组合物
US20050096209A1 (en) * 2002-06-10 2005-05-05 Asahi Glass Company, Limited Glass and method for producing glass
US20050022557A1 (en) * 2003-02-27 2005-02-03 Carty William M. Selective glass batching methods for improving melting efficiency and reducing gross segregation of glass batch components
US7507388B2 (en) * 2004-11-11 2009-03-24 Eti Soda Uretim Pazarlama Nakliyat Ve Elektrik Uretim Sanayi Ve Ticaret A.S. Process for production of dense soda, light soda, sodium bicarbonate and sodium silicate from solutions containing bicarbonate
US20070098610A1 (en) * 2005-11-02 2007-05-03 Ingram Kevin D Method of retarding quicklime for glass manufacture
US20090277225A1 (en) * 2005-12-23 2009-11-12 Pilkington Group Limited Production of Glass
US20070245854A1 (en) * 2006-04-25 2007-10-25 The Arizona Board Of Regents On Behalf Of The University Of Arizona Silicon refining process
US20130095261A1 (en) * 2006-06-20 2013-04-18 Momentive Performance Materials, Inc. Fused quartz tubing for pharmaceutical packaging
WO2008064790A1 (fr) 2006-11-27 2008-06-05 Cognis Ip Management Gmbh Procédé et installation de production de verre soluble avec récupération de chaleur
CA2673495A1 (fr) 2006-11-27 2008-06-05 Cognis Ip Management Gmbh Procede et installation de production de verre soluble avec recuperation de chaleur
US20100242545A1 (en) * 2009-03-30 2010-09-30 Richardson Andrew P Cyclical stoichiometric variation of oxy-fuel burners in glass furnaces
US20100255980A1 (en) * 2009-04-03 2010-10-07 Guardian Industires Corp. Low iron high transmission glass with boron oxide for improved optics, durability and refining, and corresponding method
US20110132230A1 (en) * 2009-12-08 2011-06-09 Chan Han Geopolymer precursor dry mixture, package, processes and methods
US20110302962A1 (en) * 2010-06-09 2011-12-15 Artur Gattermann Method for producing clear glass or clear drawn glass by utilizing a special refining process
CN101993084A (zh) 2010-11-29 2011-03-30 中煤平朔煤业有限责任公司 一种粉煤灰制备二氧化硅和氧化铝的方法
US20140024518A1 (en) * 2011-01-27 2014-01-23 Samuel Mark Leese Pellet
US20120216574A1 (en) * 2011-02-24 2012-08-30 Dawid Dewet-Smith Process for Melting and Refining Soda-Lime Glass
CN103492326A (zh) 2011-02-24 2014-01-01 欧文斯-布洛克威玻璃容器有限公司 用于熔融和澄清钠钙玻璃的方法
US9051199B2 (en) 2011-02-24 2015-06-09 Owens-Brockway Glass Container Inc. Process for melting and refining soda-lime glass
CN106517738A (zh) 2011-02-24 2017-03-22 欧文斯-布洛克威玻璃容器有限公司 用于熔融和澄清钠钙玻璃的方法
CN102424392A (zh) 2011-09-11 2012-04-25 中国科学院过程工程研究所 一种综合利用微硅粉制备白炭黑联产纳米碳酸钙的方法
US10597325B2 (en) * 2015-11-16 2020-03-24 Gcp Applied Technologies Inc. Postponed onset of quicklime hydration
US20180354841A1 (en) * 2016-02-26 2018-12-13 AGC Inc. Glass raw material granules and method for their production
CN106565096A (zh) 2016-10-31 2017-04-19 昆明理工大学 一种利用电石渣制备微晶玻璃的方法
US20210147276A1 (en) * 2017-03-16 2021-05-20 Synthera Biomedical Private Limited Manufacture of porous glass and glass-ceramic particulate structures by gel casting
US20180362380A1 (en) * 2017-06-16 2018-12-20 Owens-Brockway Glass Container Inc. Glass batch material and process for making glass
US20200156980A1 (en) * 2017-06-30 2020-05-21 Arc France Production of glass from a mixture comprising calcium oxide, and glass furnace
US20190382303A1 (en) * 2018-06-18 2019-12-19 Schott Ag Borosilicate glass article with low boron content
US20210380464A1 (en) * 2018-10-29 2021-12-09 Arc France Glass production method and industrial glass-making facility
US20210094859A1 (en) * 2019-10-01 2021-04-01 Owens-Brockway Glass Container Inc. Surgical instrument assembly including an end effector configurable in different positions
US20210340047A1 (en) * 2020-05-04 2021-11-04 Bormioli Luigi S.P.A. Method for producing a glass container

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Richard L Lehman et al: "Glass Batch Wetting With Water", Glass Industry, vol. 58, No. 12, Dec. 1, 1977, pp. 16-24, XP001253940.
Soda Solvay Chemicals international (Year: 2011). *

Also Published As

Publication number Publication date
FR3068347B1 (fr) 2020-08-28
EP3645471B1 (fr) 2025-03-12
BR112019027205A2 (pt) 2020-06-30
EP3645471A1 (fr) 2020-05-06
EP3645471C0 (fr) 2025-03-12
US20200156980A1 (en) 2020-05-21
RU2019143708A3 (fr) 2021-10-08
PL3645471T3 (pl) 2025-07-07
JP7062702B2 (ja) 2022-05-06
CN110997579A (zh) 2020-04-10
RU2019143708A (ru) 2021-06-25
ES3031560T3 (en) 2025-07-09
MX2019015368A (es) 2020-02-20
AR112489A1 (es) 2019-11-06
JP2020525393A (ja) 2020-08-27
FR3068347A1 (fr) 2019-01-04
CN110997579B (zh) 2022-08-09
HUE071504T2 (hu) 2025-09-28
WO2019002802A1 (fr) 2019-01-03

Similar Documents

Publication Publication Date Title
US11807567B2 (en) Production of glass from a mixture comprising calcium oxide, and glass furnace
RU2143410C1 (ru) Способ производства стеклокерамической плитки из использованной футеровки тиглей для выплавки алюминия (варианты) и стеклокерамическая плитка
US3682666A (en) Batch material for vitreous manufactures
US12215051B2 (en) Glass production method and industrial glass-making facility
US9598306B2 (en) Pellet and a method of manufacturing glass
US20250002387A1 (en) Method for manufacturing glass
RU2776743C9 (ru) Получение стекла из смеси, содержащей оксид кальция, с использованием стекловаренной печи
RU2776743C2 (ru) Получение стекла из смеси, содержащей оксид кальция, с использованием стекловаренной печи
CN106430986A (zh) 一种高性能泡沫玻璃及其原料和制备方法
RU2810911C2 (ru) Способ изготовления стекла и промышленная стекольная установка
RU2858708C2 (ru) Способ получения смеси сырьевых материалов, содержащей оксид кальция
AU550283B2 (en) Directed flow, thin layer glass fusion
BR112019027205B1 (pt) Processo de fabricação de vidro que compreende a preparação de uma mistura precursora de vidro para forno vítreo
BR112021006268B1 (pt) Processo de fabricação de vidro e instalação industrial de fabricação de vidro
US11591247B2 (en) Combined furnace
RU2772960C2 (ru) Комбинированная печь для производства натриево-кальциевого стекла
EP4545496A1 (fr) Procédé de fabrication de verre utilisant des matières premières cuites comme source de calcium et/ou de calcium-magnésium dans un four à haute capacité
JP2016204256A (ja) ガラスの製造方法
FR3068348A1 (fr) Preparation de fabrication de verre et four de verrerie
SU1474109A1 (ru) Способ приготовлени стекольной шихты
Dekker The agents used in sugar manufacture

Legal Events

Date Code Title Description
FEPP Fee payment procedure

Free format text: ENTITY STATUS SET TO UNDISCOUNTED (ORIGINAL EVENT CODE: BIG.); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

AS Assignment

Owner name: ARC FRANCE, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHARLES, HERVE;BONNINGUES, JEAN-MARIE;DONZE, SEBASTIEN;AND OTHERS;SIGNING DATES FROM 20200116 TO 20220119;REEL/FRAME:060537/0514

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE AFTER FINAL ACTION FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: ADVISORY ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: NOTICE OF ALLOWANCE MAILED -- APPLICATION RECEIVED IN OFFICE OF PUBLICATIONS

STPP Information on status: patent application and granting procedure in general

Free format text: PUBLICATIONS -- ISSUE FEE PAYMENT VERIFIED

STCF Information on status: patent grant

Free format text: PATENTED CASE